Deposits of gypsite occur on a small bench on the hill slope west of Knutsford in an area underlain by sandstone of the Eocene Kamloops Group. One of the deposits was worked by G.J. Rogers and S. Little of Knutsford who excavated a trench 26 metres long, 13.7 metre wide, and from 0.3 to 1.5 metres deep. About 24 metres west, another pit 1.2 metres deep has been excavated in the same material. The bench on which the deposit occurs is 30 to 46 metres wide and it is probable that the gypsite extends 182 metres southeast of the large cut. The gypsite is a greyish cream colour, due, apparently, to the presence of organic matter. It is contaminated with some sand and carries occasional small pebbles. A second deposit occurs northwest of Knutsford and is about 45 metres above the road on what is apparently a continuation of the same bench. The bench at this point is about 61 metres long and 15 metres wide. The gypsite also extends in a narrow band on a gentle slope below the bench trending towards the road (Geological Survey of Canada Memoir 249).

A number of short auger holes indicated the gypsite to be 1.2 to 2.4 metres thick and in places probably thicker. A reported analysis of a sample yielded 0.6 per cent Fe2O3 and Al2O3, 31 per cent CaO, trace MgO, 42.1 per cent SO3, 4.5 per cent insoluble and 21.6 per cent loss on ignition (Geological Survey of Canada Memoir 249).